US3438296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flying shear with alternately operative drive motors
Assignee: United Engineering and Foundry Co
•
Filing: 1967-02-06
•
Granted: 1969-04-15
•
Expires: 1987-02-06
Abstract
No abstract record available.
Inventors
- 👤 Robert Hunter Ellis
- 👤 Peter Arvid Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:34
CPC Classifications
B; B23; B23D; B23D36/00; B23D36/0008; B23D36/0033; B23D36/0041; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19014; Y10T83/00; Y10T83/465; Y10T83/4693; Y10T83/4766; Y10T83/4775
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1876456A
Cited
CA570307A
Cited
US2180599A
Cited
US2781674A
Cited
US2902875A
Cited
US3176557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |